I can't decide whose grammar I hate more: Anonymous's grammar or Copyright Labs's. Why add an ignorant and incomprehensible rant to a legal notice when you can materially alter its content and actually cause major problems? And who would ever use the word "u" when apologizing for a malformed legal notice?

Anyway, I would have changed the infringement notice to:

Dear $site,

Copyright Labs, registered copyright agent for $big_studio, has recently done a survey of the content on your website, $site_url. This letter is notice that $big_studio has granted you an irrevocable license to distribute $infringing_content indefinitely. There is no need to respond to this letter.

Regards,

Copyright Labs on behalf of $big_studio

If you're going to commit a crime, you might as well do a good job.